Navigation device



FIG. 1 is a front perspective view of a navigation device according to the present invention;

FIG. 2 is a rear perspective view of the navigation device;

FIG. 3 is a front view of the navigation device;

FIG. 4 is a rear view of the navigation device;

FIG. 5 is a left side view of the navigation device;

FIG. 6 is a right side view of the navigation device;

FIG. 7 is a top view of the navigation device; and,

FIG. 8 is a bottom view of the navigation device.

The broken lines shown in the drawings represent portions of the navigation device that form no part of the claimed design. 

CLAIM The ornamental design for a navigation device, as shown and described. 